China invented the compass, which pointed out the direction for human navigation. Used in navigation, geodesy, tourism and military.

In the Northern Song Dynasty, the compass was made and used for navigation. Its advantages are small size, high magnetism, flexible rotation and easy to be widely used.

Other uses of the compass: military, production, life, topographic survey and other aspects play an important role. For example: aviation, adventure, adventure, tourism, etc. During the Southern Song Dynasty, Arabs who frequently conducted maritime trade with China brought the compass to the Near East. In the second half of the12nd century, the compass was introduced to Europe, which facilitated Columbus discovery of america and Magellan to sail around the world.